WIP: Adds Structure Panel and Navigation for Ranges#241

Draft

sdellis wants to merge 6 commits intomainfrom StructurePanel

+1,223-7

Commits on Dec 17, 2024

adds basic tab/panel as a placeholder to the InformationPanel
sdellis
committed

Commits on Dec 20, 2024

paints ascii table of contents and a dump of the range items to the Structure panel
sdellis
committed

Commits on Jan 7, 2025

Commits on Jan 9, 2025

canvas links in Range now update video time location
sdellis
committed

Commits on Jan 14, 2025

adds fixtures and support for local development
sdellis
committed